Distributed diagnostics for internet video link

ABSTRACT

In one embodiment consistent with the invention a method of quality of service (QOS) data aggregation and service management for Internet Protocol Television (IPTV) involves receiving data from a plurality of DDRIVL collector devices representing QOS service for sets of IPTV content providers assigned to each collector device, with each collector device being in a separate specified region of Internet service; evaluating from a geographic and interconnection perspective the data from the plurality of collector devices to isolate IPTV receivers located in areas where problems with IPTV service is likely to be occurring; and populating the isolated IPTV receivers with channel set tuning information that either excludes or flags the channels that may be having problems with IPTV service. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

CROSS REFERENCE TO RELATED DOCUMENTS

This application is a divisional application of U.S. patent applicationSer. No. 12/151,619 to Mehta filed May 8, 2008 now U.S. Pat. No.8,224,362 which is hereby incorporated herein by reference.

COPYRIGHT AND TRADEMARK NOTICE

A portion of the disclosure of this patent document contains materialwhich is subject to copyright protection. The copyright owner has noobjection to the facsimile reproduction of the patent document or thepatent disclosure, as it appears in the Patent and Trademark Officepatent file or records, but otherwise reserves all copyright rightswhatsoever. Trademarks are the property of their respective owners.

BACKGROUND

Internet protocol television services are beginning operation and willsoon be a common way for consumers to obtain television programming.However, since the Internet was not designed for such applications, thequality can vary depending upon many factors.

IVL (known commercially as BIVL™—Bravia™ Internet Video Link, trademarkof Sony Corporation) is a video streaming device that is able to connectto a multitude of servers in varying locations in order to providetelevision services via the Internet. This causes multiple network pathsto become evident to each IVL unit based on location, ISP, etc. Thismeans that quality of service QoS can vary due to a number of factors. Asystem is needed to allow for distributed diagnostics for the Internetvideo link, thereby, allowing QoS testing from which various tweakingcan occur from the data gathered by DDRIVL (Distributed Diagnostics forthe Internet Video Link) to enhance the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

Certain illustrative embodiments illustrating organization and method ofoperation, together with objects and advantages may be best understoodby reference detailed description that follows taken in conjunction withthe accompanying drawings in which:

FIG. 1 is a diagram depicting the various components used in connectionwith the DDRIVL system consistent with certain embodiments of thepresent invention.

FIG. 2 depicts an example of a DDRIVL enabled IPTV system consistentwith certain embodiments of the present invention.

FIG. 3 is a flow chart depicting an example of each IVL receiver'soperation consistent with certain embodiments of the present invention.

FIG. 4 depicts an example of one mode of operation of the DDRIVLcollectors consistent with certain embodiments of the present invention.

FIG. 5 is a flow chart depicting another mode of operation of the DDRIVLcollectors in a manner consistent with certain embodiments of thepresent invention.

FIG. 6 is a flow chart depicting exemplary operation of the aggregatorconsistent with certain embodiments of the present invention.

FIG. 7, is an exemplary block diagram illustrating a DDRIVL collectordevice consistent with certain embodiments.

DETAILED DESCRIPTION

While this invention is susceptible of embodiment in many differentforms, there is shown in the drawings and will herein be described indetail specific embodiments, with the understanding that the presentdisclosure of such embodiments is to be considered as an example of theprinciples and not intended to limit the invention to the specificembodiments shown and described. In the description below, likereference numerals are used to describe the same, similar orcorresponding parts in the several views of the drawings.

The terms “a” or “an”, as used herein, are defined as one or more thanone. The term “plurality”, as used herein, is defined as two or morethan two. The term “another”, as used herein, is defined as at least asecond or more. The terms “including” and/or “having”, as used herein,are defined as comprising (i.e., open language). The term “coupled”, asused herein, is defined as connected, although not necessarily directly,and not necessarily mechanically. The term “program” or “computerprogram” or similar terms, as used herein, is defined as a sequence ofinstructions designed for execution on a computer system. A “program”,or “computer program”, may include a subroutine, a function, aprocedure, an object method, an object implementation, in an executableapplication, an applet, a servlet, a source code, an object code, ashared library/dynamic load library and/or other sequence ofinstructions designed for execution on a computer system.

The term “program”, as used herein, may also be used in a second context(the above definition being for the first context). In the secondcontext, the term is used in the sense of a “television program”. Inthis context, the term is used to mean any coherent sequence of audiovideo content such as those which would be interpreted as and reportedin an electronic program guide (EPG) as a single television program,without regard for whether the content is a movie, sporting event,segment of a multi-part series, news broadcast, etc. The term may alsobe interpreted to encompass commercial spots and other program-likecontent which may not be reported as a program in an electronic programguide.

Reference throughout this document to “one embodiment”, “certainembodiments”, “an embodiment” or similar terms means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the presentinvention. Thus, the appearances of such phrases or in various placesthroughout this specification are not necessarily all referring to thesame embodiment. Furthermore, the particular features, structures, orcharacteristics may be combined in any suitable manner in one or moreembodiments without limitation.

The term “or” as used herein is to be interpreted as an inclusive ormeaning any one or any combination. Therefore, “A, B or C” means “any ofthe following: A; B; C; A and B; A and C; B and C; A, B and C”. Anexception to this definition will occur only when a combination ofelements, functions, steps or acts are in some way inherently mutuallyexclusive.

The term “processor”, “controller”, “CPU”, “Computer” and the like asused herein encompasses both hard programmed, special purpose, generalpurpose and programmable devices and may encompass a plurality of suchdevices or a single device in either a distributed or centralizedconfiguration without limitation.

The term DDRIVL as used herein is an abbreviation for DistributedDiagnostics for Internet Video Link, and is used as a modifier forseveral of the components used in the Internet diagnostic systemsconsistent with embodiments of the present invention as well as for theoverall system itself including diagnosed components and systems.

The term IVL as used herein is an abbreviation for Internet Video Link.In one commercial embodiment, Sony Electronics Inc.'s Bravia® InternetVideo Link (BIVL) may be considered IVL. An IVL receiver thus refers toa device, whether television set receiver, set top box (STB) receiver,set back box (SBB) receiver or any other physical embodiment of areceiver for receipt of Internet Protocol Television (IPTV) services.

The term Internet Service Provider (ISP) is used in its accepted senseas an entity that provides for access to the Internet. Commercial ISPsinclude such providers as various cable television systems (e.g., CoxCable, Time Warner Cable, etc.), telephone companies (e.g., AT&T,Embarq, NTT, etc.) and other providers that provide high speed Internetservice suitable for Internet Protocol Television (IPTV). The term IPTVContent Provider is used to describe any source of IPTV or similaraudio/video (A/V) content via the Internet. Commercial examples as ofthis writing include, but are not limited to such services offered byYahoo, AOL and Grouper in the U.S. In Hong Kong, PCCW and City Telecomprovide IPTV services, while in Europe France Telecom, Free, and Neufare offered as well as PCCW and City Telecom. In Japan, Nippon Telephoneand Telegraph (NTT), KDDI, and Softbank offer IPTV services. The aboveis by no mean intended to be an exhaustive list, but merelyillustrative. As IPTV becomes more widely available, other contentproviders are likely to evolve.

It should also be noted that there can be a great deal of overlapbetween ISPs and IPTV service providers. For example, IPTV is currentlyoffered by NTT which also provides ISP services. Similarly, AOL providesIPTV as well as ISP services. However, for purposes of this document, itis instructive to treat the two as separate entities since one might usea first ISP to obtain content from a second ISP that also serves as anIPTV content provider, with the understanding that they may represent acommon corporate entity and be physically located in the same oroverlapping facilities. Hence, for purposes of this document, thevarious terms will apply to the role being played by any given entity(including dual roles where applicable).

The term node as used herein is intended to mean any of the networknodes reported on by the DDRIVL collectors, and as will be clear fromcontext, may also refer to the DDRIVL collector itself. In the case of aDDRIVL collector node, such node can be embodied as a minimal personalcomputer (PC) configuration with network connections and Internetaccess. In certain preferred embodiments, a LAMP box can be used, butthis should not be considered limiting since other hardware and softwareconfigurations can be implemented to carry out the DDRIVL functions. (A“LAMP box” is a computer running Linux, Apache, MySQL and PHP, which canbe used for many functions including the DDRIVL collector node or a webserver.)

An IVL receiver unit alone is not currently capable of providing suchdetailed statistics regarding QoS. A major problem during thedevelopment of and the servers that serve it content was that there wasno other product able to provide a standard to which the IVL to serverinteraction was to be testing against. So there would be no way to knowwhether IVL was failing due to deficiency in its own software or becausethe server was not implemented correctly. Another problem that DRIVLaims to solve in certain embodiments is ISP network throughput. Thegreater number of DDRIVL collector nodes placed on each ISP, the morestatistics can be gathered and analyzed to judge content delivery speed.

In systems consistent with the present embodiment, provision is made tokeep track of the content available through each service provider andverifies if the content is appropriate to ingest by. If a serviceprovider does not meet a set of basic specifications it will beautomatically removed from the Service Management system so a customermight never see a problem if one were to occur, thereby, improving theirexperience.

In systems exemplary of the present invention, developers, technicalsupport, the business group, and management to get a clear understandingof the performance, QoS, and content information of the IVL's currentservice providers. The system also has the capability of generatingemails upon detecting a service problem and also produces daily reportsfor QoS and content freshness (used by the business group).

Turning now to FIG. 1, the various components used in connection withthe DDRIVL system are depicted. In each case, one block is used torepresent multiple entities except as explicitly noted. This drawing ispresented by way of illustration of the interconnection of each of therelevant components, systems and services by way of the Internet 10. TheISPs 14 are shown embedded within the Internet 10 since they are used inmost cases for the other components to interconnect to each other and tootherwise connect to other resources on the Internet 10, however theindividual functionality of the ISP, or shortcomings, are a part of thediagnostic functions carried out by the system presented herein.

In this illustration, a plurality of IVL receivers 16 (which couldequally well be considered IPTV receivers in any physical configuration)are connected to the Internet 10 via any suitable ISP 14 in order toreceive content from any of a plurality of IPTV content providers 20. Aplurality of DDRIVL collectors 24 are also connected to the Internet 10in various strategic locations so as to collect information about thevarious Internet pathways (including the ISPs 14) and the variouscontent providers. This information is reported to the DDRIVL aggregator30 for analysis. Where action is necessary, such action is taken by wayof IVL service manager 34, with IVL service manager 34 either beingdirectly coupled to DDRIVL aggregator 30 as shown by the dashed line, orvia another connection through the Internet. The IVL service manager 34oversees operation of all of the IVL receivers 16 in that it providesthe receivers with information about the availability of the IPTVcontent as well as quality of service data or other data that can beused to optimize the viewing experience. For example, if service is lessthan optimum, the IVL service manager 34 may indicate to a particularIVL receiver 16 or group of receivers that a particular IPTV serviceprovider 20 is only able to provide content at reduced resolution.

There may be a single DDRIVL aggregator 30 and a single IVL servicemanager, or there may be several or many. In any event, these entitiesare shown with shadows to indicate that they should preferably beimplemented using redundant systems for safety in the event of failureof a primary system, since their proper operation is integral to the IVLreceivers 15 proper receipt of content.

FIG. 2 depicts an example of a DDRIVL enabled IPTV system consistentwith certain embodiments with the Internet 10 connections removed forpurposes of illustrating the actual communication pathways. For clarityin this illustration, three DDRIVL collectors 40, 42 and 44 are shown,four IVL receivers 50, 52, 54 and 56 are shown, two ISPs 60 and 62 areshown and three IPTV content providers 70, 72 and 74 are shown, with theunderstanding that the arrangement can be massively scaled upward in anydimension. For correlation with FIG. 1, each of the DDRIVL collectorsare represented by 24, each of the IVL receivers are represented by 16,each of the ISPs are represented by 14 and each of the IPTV contentproviders are represented by 20, and may be generally referred to bythese reference numbers for generalization or more particularly referredto by the numbers in FIG. 2 for particular examples. For ease ofillustration, the number of elements is limited as shown, but can bereadily extrapolated into much larger numbers in field implementations.

In operation, each IVL receiver's operation is generally depicted inFIG. 3, starting at 100 after which the IVL receiver 16 boots up,restarts or otherwise initializes at 106. Once fully operational, theIVL receiver contacts the IVL service manager 34 through its ISP 14 andthe Internet 10 at 112. In so doing, the IVL receiver 16 identifiesitself and is authenticated as a legitimate IVL receiver to the IVLservice manager 34. The IVL service manager 34 then at 118 sendsinformation to the IVL receiver 16 enabling IVL receiver 16 to receiveIPTV content from any of several operational IPTV content providers 20.Such information may include IP addresses for the content, program guideinformation, metadata, as well as a set of parameters for receipt of thecontent. Such parameters may include a measure of quality of service(QOS), as well as parameters for maximum or fixed resolution forretrieval of the IPTV content for each IPTV content provider 20 (basedon the IPTV content provider 20's ability to provide service atacceptable quality levels to the DDRIVL collectors 24 and IVL receivers16 whose quality is judged by the aggregator 30 to be comparable to theDDRIVL collectors reporting quality information. In the event aparticular IPTV content provider 20 is either not functioning, or thereis a problem with one or more of the various links or ISP networksthrough which the content is to be supplied to a particular IVLreceiver, a particular IPTV content provider may be withheld from alisting for any particular IVL receiver to avoid user frustration whenattempting to view the content. Such information can be gleaned from thediagnostic processes to be described later.

At 124, the content availability and associated service parameters, etc.are stored for use by the IVL receiver 16. The information can then bedisplayed at the user's command as a part of the user interface for IPTVreception on the IVL receiver 16's associated display (not explicitlyshown). The IVL receiver 16 continues to use this information asdescribed until, by virtue of a push or pull operation, updatedinformation is received from the IVL service manager 34 at 136. Suchinformation can, for example, be requested by the IVL receiver on aperiodic basis, or can be updated at the initiation of the IVL servicemanager 34, either on a periodic basis or as changes in serviceparameters are identified.

By way of example, if a particular one of the IPTV content providers 20goes down and is unable to provide content, the IVL service manager canremove the particular IPTV content provider from the IVL receivers 16 sothat the users will be advised that there is no point “tuning” to thatparticular IPTV content provider. Once service is restored, the IVLservice manager 34 can update the IVL receivers accordingly so that thatparticular content provider can again be listed by the IVL receiver as asupplier of content. In this example, the user is spared the frustrationof attempting to view content that is either not present or of such poorquality as to be deemed by the IVL service manager 34 or DDRIVLaggregator 30 to be unworthy of listing. Hence, if a particular segmentof service is unavailable, the user perceives a better serviceexperience by never seeing a listing for content that is of seriouslyinferior quality or unavailable.

In another example, if a particular ISP such as 62 is experiencing lowthroughput so as to impact the quality of IPTV content delivered to itscustomers, the IVL service manager 34 can notify IVL receivers 54 and 56and provide an indication that service is either down or can only bedelivered at lower resolution. Since ISP 60 still provides qualityservice, there is no need to provide similar notification to IVLreceivers 50 and 52.

In order to obtain the QOS information used to deduce the status of thenetwork at its various sites, the network status is first ascertainedusing DDRIVL collectors 24 which gather information about the network.This information is then sent to DDRIVL aggregator 30 which assimilatesthe information gathered from the DDRIVL collectors 24 in order toascertain the status of the network at any given instant. It should benoted that the Internet is a complex and ever changing network. Contentreceived over the Internet 10 may arrive using any number of pathways.Problems at any location from the content source (IPTV content providers20) to the content sink (IVL receivers 16) can cause any particular IVLreceiver to be unable to receive particular content.

In embodiments consistent with the present invention, DDRIVL collectors24 behave as emulators of an IVL receiver. (Hence, in other embodiments,certain of the IVL receivers 16 themselves can be adapted to behave as aDDRIVL collector.) Multiple DDRIVL collectors 24 such as 40, 42 and 44are distributed throughout the network. These collectors 24 then operatein a number of modes to ascertain and report the condition of thenetwork.

With reference to FIG. 4, one mode of operation of the DDRIVL collectors24 is described starting at 200 after which the DDRIVL collector 24boots up and requests/receives a Poll ID from the DDRIVL aggregator 30to identify itself with a particular polling time interval at 202. Thus,the DDRIVL collectors 24 connects to the DDRIVL aggregator 30 before itstarts testing the service providers and is assigned a poll ID from theDDRIVL aggregator 30 so that when it returns to drop off results to theDDRIVL aggregator 30 the DDRIVL collectors 24 can readily be associatedwith a set of tests and a known polling time interval. The DDRIVLcollector 24 retrieves a listing of all available services at 206 fromthe IVL service manager 34. In the event the service manager does notrespond, the DDRIVL collector 24 may assume that its current listing isunchanged and proceed to 212 where an N second sample of each programfrom each IPTV content provider is sequentially retrieved as a test. Byway of example and not limitation, the N second sample can be a 1-20second sample for each program on each IPTV content provider 20 taken atthe polling time interval. As a result of the retrieval of a sample ofall content, the DDRIVL collectors 24 can make an estimateddetermination as to the current state of each program, each contentprovider and each element of the network disposed between the DDRIVLcollectors 24 and the IPTV content providers 20.

By virtue of retrieving a sample of each program from each IPTV contentprovider 20, the DDRIVL collectors 24 can ascertain a number ofsignificant pieces of information, such as: verification that eachprogram is actually active, verify the identity of the program, checkfor the presence and validity of a thumbnail representation of thevideo, measure the bit rate on the retrieved sample, measure the errorrate of the retrieved sample, determine other attributes of the programor IPTV service provider 20. This information is measured at 218 and theresults are sent to the DDRIVL aggregator 30 at 224. The process thenends for a period of time (e.g., one day) at 230, and then repeats atthe periodic rate defined for 230.

Since this process is carried out by many DDRIVL collectors 24distributed throughout the network, the results from the various DDRIVLcollectors 24 can be compared and analyzed at the DDRIVL aggregator 30.However, in view of the dynamic nature of the Internet 10, it isdesirable to provide more timely updates than can be handled bydownloading a sample of each program from each IPTV content provider 20.

In order to provide more timely notification of major issues, the DDRIVLcollectors 24 can also operate in a second mode as depicted in FIG. 5starting at 300 after which the DDRIVL collector 24 boots up andrequests/receives a Poll ID from the DDRIVL aggregator 30 to identifyitself with a second shorter particular polling time interval at 202 asin FIG. 4. The Poll ID may be the same, but two polling time intervalsare retrieved. The shorter polling time interval may be on the order ofminutes or hours (e.g., every 10-20 minutes), for example. Thus, theDDRIVL collectors 24 connects to the DDRIVL aggregator 30 before itstarts testing the service providers and is assigned a poll ID from theDDRIVL aggregator 30 so that when it returns to drop off results to theDDRIVL aggregator 30 the DDRIVL collectors 24 can readily be associatedwith a set of tests and a known polling time interval. The DDRIVLcollector 24 retrieves a listing of all available services at 206 fromthe IVL service manager 34. In the event the service manager does notrespond, the DDRIVL collector 24 may assume that its current listing isunchanged and proceed to 212 where an M second sample of each programfrom each IPTV content provider is sequentially retrieved as a test. Byway of example, the M second sample can be a 1-10 second sample for eachprogram on each IPTV content provider 20. As a result of the retrievalof a sample of all content, the DDRIVL collectors 24 can make adetermination as to the current state of each program (including theprogram identity), each content provider and each element of the networkdisposed between the DDRIVL collectors 24 and the IPTV content providers20.

By virtue of retrieving a sample of one randomly selected program fromeach IPTV content provider 20, the DDRIVL collectors 24 can ascertain anumber of significant pieces of information, such as: verification thateach program is actually active, verify the identity of the program,check for the presence and validity of a thumbnail representation of thevideo, measure the bit rate on the retrieved sample, measure the errorrate of the retrieved sample, determine other attributes of the programor IPTV service provider 20. This information is measured at 318 and theresults are sent to the DDRIVL aggregator 30 at 324. The process thenends for a much shorter period of time than before (e.g., 10 minutes) at330, and then repeats at the periodic rate defined for 330.

Since this process is carried out by many DDRIVL collectors 24distributed throughout the network, the results from the various DDRIVLcollectors 24 can be compared and analyzed at the DDRIVL aggregator 30.By way of example and not limitation, consider the arrangement of FIG.2. Once information is aggregated from the DDRIVL collectors 40 asdescribed, the data from the DDRIVL collectors 40, 42 and 44 can beanalyzed.

The DDRIVL aggregator can serve not only to provide data to the IVLservice manager 34, but can also provide data to the IPTV contentproviders 20 and the ISPs 14. For example, DDRIVL aggregator 30 canadvise IPTV content provider 20 that a particular program has beenoffered for an extended period of time, which may indicate that it istime to rotate the content.

In an exemplary embodiment, the retrieval of information from the DDRIVLcollectors is implemented by polling from the DDRIVL aggregator thatoccurs every 10 minutes for every node. This data is analyzed and thefollowing metrics are collected: a) download bit rate, b) serviceavailability, c) server response time from IPTV content provider, d)asset count is collected (number of videos each service provider has),e) each asset (video or program) is tested for validity, and f) eachthumbnail representation of each asset is tested for validity.

The responses from the DDRIVL collectors is then reported to the DDRIVLaggregator 30 that further analyses this data for validity due to thefact that a network error on any node could have corrupted theinformation at that particular node. A system wide decision is made andreported to a central database at the DDRIVL aggregator 30. A webinterface was created to present this data to customer support, thirdparty developers, management, and the business groups associated withall aspects of delivery and reception of the IPTV content. Thus, thediagnostic system can be used not only to directly control the IVLreceiver access to content, but also to provide a diagnostic tool forthe IPTV content providers and ISPs.

Consider the following scenarios:

Scenario 1:

Test results: DDRIVL collector 40 and 42 both report no content isavailable from IPTV content provider 72. DDRIVL collector 44 reportscontent from IPTV content provider 72.

Conclusion: IPTV content provider 72 is operational. ISP 60 may beexperiencing problems, or the connection from ISP A to content provider72 may be experiencing problems.

Action: IVL service manager 34 can remove IPTV content provider 72 fromavailability for IVL receivers 50 and 52, while leaving them on theavailable list for IVL receivers 54 and 56. IVL service manager 34 canadvise ISP 60 and IPTV content provider 72 that there is a problem.Scenario 2:Test results: DDRIVL collector 40, 42 and 44 all no content is availablefrom IPTV content provider 72.Conclusion: IPTV content provider 72 or closely related infrastructureis likely not operational.Action: IVL service manager 34 can remove IPTV content provider 72 fromavailability for all IVL receivers. IVL service manager 34 can adviseIPTV content provider 72 that there is a problem.Scenario 3:Test results: DDRIVL collectors have reported a particular program isavailable from IPTV content provider 74 for an extended period of time(e.g., 45 days).Conclusion: IPTV content provider 74 may be providing stale content thatshould be rotated.Action: IVL service manager 34 can advise IPTV content provider 74 thatthe content may need to be rotated.Scenario 4:Test results: DDRIVL collector 40 and 44 both report no content isavailable from IPTV content provider 70. DDRIVL collector 42 reportscontent from IPTV content provider 70.Conclusion: IPTV content provider 70 is operational, but an element ofshared infrastructure (not shown) between IPTV content provider 70 andDDRIVL collectors 40 and 44 may be experiencing problems.Action: IVL service manager 34 can remove IPTV content provider 70 fromavailability for IVL receivers known to share the likely problematicinfrastructure, while leaving them on the available list for IVLreceivers not sharing that infrastructure. IVL service manager 34 canadvise ISP 60 and IPTV content provider 70 of the problem. In this case,a shared hub, line, router or other network element could be theculprit.Scenario 5:Test results: DDRIVL collector 40 and 42 both report poor data ratesfrom IPTV content provider 72. DDRIVL collector 44 reports no problemsin content from IPTV content provider 72.Conclusion: IPTV content provider 72 is operational, but the network maybe experiencing data traffic congestion. ISP 60 may be experiencingproblems, or the connection from ISP A to content provider 72 may beexperiencing problems.Action: IVL service manager 34 can remove IPTV content provider 72 fromavailability for IVL receivers 50 and 52, while leaving them on theavailable list for IVL receivers 54 and 56. In the alternative, if thedata rate is serviceable, the resolution available can be decreased andVL receivers 50 and 52 can be informed to only use a lower resolution.IVL service manager 34 can advise ISP 60 and IPTV content provider 72that there is a problem.Scenario 6:Test results: Any DDRIVL collector reports no content for a particularprogram on IPTV content provider 72. Other content is accessible fromIPTV content provider 72.Conclusion: IPTV content provider 72 is operational, but a particularprogram is not.Action: IVL service manager 34 can remove the program from listing forIPTV content provider 72 from availability for all IVL receivers. IVLservice manager 34 can advise IPTV content provider 72 that there is aproblem with the program.

Referring now to FIG. 6, a flow chart depicting operation of theaggregator 30 is depicted in flow chart form as 400 starting at 402where a node contact occurs between the aggregator and one of the DDRIVLcollectors 24. At this point the signature of the DDRIVL collector 24'ssignature is checked for validity to assure that the device isauthorized by the network at 406. If not, the device is rejected at 408and no further action is taken except to await another node contact at402. The poll identity can be requested at 410 if the DDRIVL collectornode is valid at 406. If no poll identity is requested at 410, thevalidity of the poll identity is checked at 414 with invalidityresulting in rejection at 408. If a poll ID is requested at 410 it isassigned along with long and short poll time intervals and aninstruction set (to instruct the DDRIVL collector 24 as to what tests tocarry out and what content providers, ISPs, etc. are to be tested at420, and control returns to await the next node contact. If the poll IDis valid at 414, the results of the poll are stored at 424. If onexamination of the results at 424, a minimum number of nodes have notyet been contacted at 424 control passes to 402 at 428. If a minimumnumber of nodes has been contacted at 428, the results are used toaggregate the data and assess the network situation at 434. This iscarried out by evaluation of each node's results at 440 which breaksdown to evaluation of criteria given in an instruction set to the DDRIVLcollector at 444 (such as that assigned at 420). To evaluate thecriteria, it is determined if the criteria is region specific at 448 andif so, the results are broken down to based on region to perform anyrequired actions (e.g., disabling IVL receivers in a particular regionor notifying a regional node of a potential problem). At 452, if acriterion is region specific and the outage is localized to that region,the region can be flagged as being defective. The aggregator can thenpotentially direct more nodes to test this particular region in thefuture poll intervals in order to help isolate the issue.

If the problem is not region specific at 448, the results are analyzedas a collective at 456. A collective decision is made by evaluating thecriteria over all of the nodes that have reported in and make a decisionwhether a particular service is available or not. After such evaluation,it can be determined if there are any service outages at 460. and if so,the service is marked as temporarily unavailable at 464 and the relatedIVL receivers are notified so that the service does not appear on itsprogram guide. If there are no service outages at 460, the informationis recorded so as to maintain statistical information at 470. Thefollowing metrics can be recorded with all metrics being analyzed bycomparing results from multiple nodes: 1) Download bitrate (could be anaverage or regional or both); 2) Response time (could be an average orregional or both); and 3) Service specific information can be trackedand recorded (number of videos available, video codec, video bitrates,etc). Those skilled in the art will appreciate that other metrics can bemeasured and factored into the analysis to determine which services areavailable at various locations in the network. The service can also beregulated to assure that the highest quality video and audio can be usedgiven the current state of the network.

Referring now to FIG. 7, an exemplary DDRIVL collector device 24 isdepicted which incorporates an interface to the Internet 502, whichcould be a cable connection to a cable modem or an Ethernet connectionor the like. As previously noted, the DDRIVL collector 24 can have aLAMP hardware and software or firmware architecture. The interface 502is connected to processor 508 via any suitable bus structure such as 512(which may represent multiple busses). A memory 514 is used by processor508 to carry out the various functions of the collector device andincorporates an operating system (e.g., a Linux kernel) which operatesin a conventional fashion. The memory (which may include persistentstorage such as EERAM memory or disc drive as well as dynamic randomaccess memory) stores routines for carrying out exhaustive channel andservice queries as described above on, for example, a daily basis, aswell as routines for simply sampling the various services for one or afew channels. A database is stored therein to carry the queried data.The results of the query are scheduled by a scheduler routine and storedin the database for conveyance to the aggregator on a regular basis.

Hence, systems such as the illustrative embodiment shown can be used tocalculate where and when new CDNs and servers need to be placed in thenetwork. The concept of multiple nodes reporting statistics to a centralsystem and a redundant backup system, which are used to calculate QoSpermits centralized control over the network. A voting system can beused in the aggregator to aggregate statistics from multiple nodes intoa single value that can be used to judge a content provider. Thealgorithm for carrying out the aggregation can be a simple majority voteof affected nodes or can evolve into more complex algorithms as thenetwork advances in complexity.

Some of the relevant DDRIVL features consistent with the presentembodiment (but not necessarily requirements of a system consistent withthe present invention involve use of a distributed system capable ofjudging the Internet from multiple points of interest. This minimizingcreating any false positive alarms and also allows developers andcustomer support to easily diagnose problems and develop better contentdelivery systems. Also, other entities can be provided access to thedata by emailing reports generated by DRIVL or can be given useraccounts to access data pertinent to their particular service (e.g., anISP or an IPTV content provider). This information allows them todiagnose problems and improve performance based on the metrics gatheredby DRIVL. DRIVL can be used to make assessments on service providers,QoS, content freshness, content quality, and content quantity based onstatistics easily viewable on DRIVL's web interface. DRIVL need not onlybe used to identify issues surrounding IVL, but can further be used toaid in monitoring any realtime content delivery technology. It can bedeployed as a distributed system, thereby, mitigating any problems asingle node and a single point of failure can cause.

Thus, in one embodiment, an Internet Protocol Television (IPTV)information collector device has an Internet interface for communicationwith an aggregator via the Internet and for communication with IPTVservice providers. A processor functions to carry out a process of:conducting a query of an IPTV service and at least one IPTV channelsupplied thereby; gathering quality of service (QOS) information fromthe at least one IPTV channel of the IPTV service as a result of thequery; and reporting the QOS service to an aggregator device.

In certain embodiments, conducting the query involves conducting a queryof a plurality of all available IPTV service providers as assigned tothe IPTV information collector device. In certain embodiments,conducting the query involves conducting a query of all availablechannels of a plurality of all available IPTV service providers asassigned to the IPTV information collector device. In certainembodiments, the query and reporting are conducted on a periodic basis.In certain embodiments, conducting the query involves conducting asample query of a sample of channels of a plurality of all availableIPTV service providers as assigned to the IPTV information collectordevice; and conducting an exhaustive query of all available channels ofthe plurality of all available IPTV service providers as assigned to theIPTV information collector device. In certain embodiments, the queriesare conducted at intervals assigned to the collector device by theaggregator device. In certain embodiments, the sample query is conductedon a first periodic basis, and wherein the exhaustive query is conductedon a second periodic basis, and wherein the second period is longer thanthe first period. In certain embodiments, the QoS information includes amaximum or fixed resolution of a particular channel. In certainembodiments, the QoS information includes a bit rate for servicereceived by the collector from a particular channel or service provider.In certain embodiments, the device can be implemented in a LAMP box. Incertain embodiments, the device is identified by a poll ID obtainedassigned to the collector device by the aggregator device. In certainembodiments, the query is conducted at an interval assigned to thecollector device by the aggregator device.

In another embodiment, an Internet Protocol Television (IPTV)information collector device has an Internet interface for communicationwith an aggregator via the Internet and for communication with IPTVservice providers. A processor functions to carry out a process ofconducting a query of an IPTV service and at least one IPTV channelsupplied thereby; gathering quality of service (QOS) informationincluding a maximum or fixed resolution measure from available IPTVchannels and IPTV service assigned to the device as a result of thequery; and reporting the QOS service to an aggregator device; whereinconducting the query involves: conducting a sample query of a sample ofchannels of a plurality of all available IPTV service providers asassigned to the IPTV information collector device; and conducting anexhaustive query of all available channels of the plurality of allavailable IPTV service providers as assigned to the IPTV informationcollector device; and wherein the sample query is conducted on a firstperiodic basis, and wherein the exhaustive query is conducted on asecond periodic basis, and wherein the second period is much longer thanthe first period.

In certain embodiments, In certain embodiments, the QOS informationincludes a bit rate for service received by the collector from aparticular channel or service provider. In certain embodiments, thedevice can be implemented in a LAMP box. In certain embodiments, thequeries are conducted at intervals assigned to the collector device bythe aggregator device.

Another method of quality of service (QOS) data aggregation and servicemanagement for Internet Protocol Television (IPTV) involves receivingdata from a plurality of DDRIVL collector device representing QOSservice for sets of IPTV content providers assigned to each collectordevice, with each collector device being in a separate specified regionof Internet service; evaluating from a geographic and interconnectionperspective the data from the plurality of collector devices to isolateIPTV receivers located in areas where problems with IPTV service islikely to be occurring; and populating the isolated IPTV receivers withchannel set tuning information that either excludes or flags thechannels that may be having problems with IPTV service.

In certain embodiments, the channel set tuning information is reflectedin an on screen displayed electronic program guide. In certainembodiments, the method further involves automatically notifyingoperators of nodes within the Internet of problems that may be occurringwith their equipment as indicated by the evaluation of the geographicand interconnection perspective evaluation. In certain embodiments, themethod further involves issuing commands to a DDRIVL collector tocollect additional quality of service information to further isolate aproblem. In certain embodiments, the QOS information includes a maximumor fixed resolution of a particular channel. In certain embodiments,data are received from the plurality of collectors as a result of queryand reporting that are conducted on a periodic basis. In certainembodiments, the querying and reporting are conducted at intervalsassigned to the collector device by an aggregator device. In certainembodiments, the QOS information includes a bit rate for servicereceived by the collector from a particular channel or service provider.

Another method of quality of service (QOS) data aggregation and servicemanagement for Internet Protocol Television (IPTV) involves receivingdata from a plurality of DDRIVL collector device representing QOSservice for sets of IPTV content providers assigned to each collectordevice, with each collector device being in a separate specified regionof Internet service; wherein data are received from the plurality ofcollectors as a result of query and reporting that are conducted on aperiodic basis, and wherein the QOS information includes a maximum orfixed resolution of a particular channel; evaluating from a geographicand interconnection perspective the data from the plurality of collectordevices to isolate IPTV receivers located in areas where problems withIPTV service is likely to be occurring; providing the evaluation to aservice manager that populates the isolated IPTV receivers with channelset tuning information that either excludes or flags the channels thatmay be having problems with IPTV service, wherein the channel set tuninginformation is reflected in an on screen displayed electronic programguide.

In certain embodiments, the service manager further automaticallynotifies operators of nodes within the Internet of problems that may beoccurring with their equipment as indicated by the evaluation of thegeographic and interconnection perspective evaluation. In certainembodiments, the method further involves issuing commands to a DDRIVLcollector to collect additional quality of service information tofurther isolate a problem. In certain embodiments, the QOS informationincludes a bit rate for service received by the collector from aparticular channel or service provider. In certain embodiments, thequerying and reporting are conducted at intervals assigned to thecollector device by an aggregator device.

Those skilled in the art will recognize, upon consideration of the aboveteachings, that certain of the above exemplary embodiments are basedupon use of one or more programmed processors, computers or otherprogrammable devices. However, the invention is not limited to suchexemplary embodiments, since other embodiments could be implementedusing hardware component equivalents such as special purpose hardwareand/or dedicated processors. Similarly, general purpose computers,microprocessor based computers, micro-controllers, optical computers,analog computers, dedicated processors, application specific circuitsand/or dedicated hard wired logic may be used to construct alternativeequivalent embodiments.

Certain embodiments described herein, are or may be implemented usingone or more programmed processors executing programming instructionsthat are broadly described above in flow chart form that can be storedon any suitable electronic or computer readable storage medium and/orcan be transmitted over any suitable electronic communication medium.However, those skilled in the art will appreciate, upon consideration ofthe present teaching, that the processes described above can beimplemented in any number of variations and in many suitable programminglanguages without departing from embodiments of the present invention.For example, the order of certain operations carried out can often bevaried, additional operations can be added or operations can be deletedwithout departing from certain embodiments of the invention. Errortrapping can be added and/or enhanced and variations can be made in userinterface and information presentation without departing from certainembodiments of the present invention. Such variations are contemplatedand considered equivalent.

While certain embodiments herein were described in conjunction withspecific circuitry that carries out the functions described, otherembodiments are contemplated in which the circuit functions are carriedout using one or more programmed processors. General purpose computers,microprocessor based computers, micro-controllers, optical computers,analog computers, dedicated processors, application specific circuitsand/or dedicated hard wired logic, analog circuitry, pluralities of suchdevices and combinations of such devices in centralized or distributedconfigurations may be used to construct alternative equivalentembodiments. Other embodiments could be implemented using hardwarecomponent equivalents such as special purpose hardware and/or dedicatedprocessors.

While certain illustrative embodiments have been described, it isevident that many alternatives, modifications, permutations andvariations will become apparent to those skilled in the art in light ofthe foregoing description.

What is claimed is:
 1. A method of quality of service (QOS) dataaggregation and service management for Internet Protocol Television(IPTV), comprising: receiving data from a plurality of DDRIVL(Distributed Diagnostics for the Internet Video Link) collector devicesrepresenting QOS service for sets of IPTV content providers assigned toeach DDRIVL collector device, with each DDRIVL collector device being ina separate specified region of Internet service; where the data receivedfrom the plurality of DDRIVL collector devices is generated by analysisof video received at each DDRIVL collector device; where data arereceived from the plurality of DDRIVL collector devices as a result ofquery of the DDRIVL collector devices and reporting by the DDRIVLcollector devices that are conducted on a periodic basis, and whereinthe QOS information includes a maximum or fixed resolution of aparticular channel; evaluating from a geographic and interconnectionperspective the data from the plurality of DDRIVL collector devices toisolate IPTV receivers located in areas where problems with IPTV serviceis likely to be occurring; providing the evaluation to a service managerthat populates the isolated IPTV receivers with channel set tuninginformation that excludes the channels that may be having problems withIPTV service, wherein the channel set tuning information is reflected inan on-screen displayed electronic program guide; where the servicemanager further automatically notifies operators of nodes within theInternet of problems that may be occurring with their equipment asindicated by the evaluation of the geographic and interconnectionperspective evaluation; and issuing commands to at least one DDRIVLcollector to collect additional quality of service information tofurther isolate a problem; where the querying and reporting areconducted at intervals assigned to the DDRIVL collector device by anaggregator device.
 2. The method according to claim 1, wherein the QOSinformation includes a bit rate for service received by the DDRIVLcollector device from a particular channel or service provider.